CN213336029U - Automatic test system of displacement sensor with precision compensation - Google Patents

Abstract

The utility model discloses an automatic test system of displacement sensor with precision compensation, which comprises a test module and a measurement and control module, wherein the test module comprises a mounting rack, a compression component, a compression driving device, a sliding test body, a test driving device and a measuring device, the mounting rack comprises a bottom plate and a top plate arranged above the bottom plate in parallel, and the top surface of the top plate is provided with a sensor mounting position; the pressing driving device is connected with the pressing assembly and can drive the pressing assembly to move in a translation mode to be close to the sensor mounting position, and the pressing assembly can tightly press and fix the displacement sensor on the sensor mounting position; the sliding test body is arranged on the bottom plate in a sliding mode and located below the sensor installation position, the sliding test body can be provided with a magnetic piece, and the test driving device can drive the sliding test body to horizontally move and slide parallel to the top plate; the measuring device is used for measuring the moving distance of the sliding test body; the measurement and control module is connected with the pressing driving device and the testing driving device and can be detachably connected with the displacement sensor.

Description

Automatic test system of displacement sensor with precision compensation

Technical Field

The utility model belongs to the technical field of the sensor test, especially, relate to an automatic test system of displacement sensor with precision compensation.

Background

Before leaving the factory, the displacement sensor must carry out quantitative test on main performance parameters of the displacement sensor so as to ensure the performance reliability of the product. At present, the manual detection mode is usually adopted to carry out function test on the displacement sensor, each step all costs a large amount of time, continuous operation is difficult to carry out, the degree of automation is low, the clamping of the displacement sensor is fixed to be troublesome and the stability is poor, the displacement sensor is easy to shake, the test efficiency is low, the test flexibility is low, the test error is large, the reliability of a test result is low, and the use requirement of mass test cannot be met. In addition, when the displacement sensor is tested, output data of the displacement sensor is usually compared with output data of the motor, so that whether the displacement sensor is qualified or not is judged, but errors may still exist between the output data of the motor and actual displacement data, so that a test result has errors, and whether the displacement sensor is qualified or not cannot be accurately judged.

The above description is included in the technical recognition scope of the inventors, and does not necessarily constitute the prior art.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model aims at providing a displacement sensor automatic test system with precision compensation, displacement sensor is fixed reliable and stable, can carry out physical precision compensation to the test moreover, and testing error is little, and the measuring accuracy is high, and the test result is accurate reliable, guarantees product quality, and degree of automation is high moreover, and efficiency of software testing is high, can realize the continuous test to displacement sensor, satisfies big batch test demand, and the practicality is strong, is fit for popularization and application.

In order to achieve the above object, the utility model provides a displacement sensor automatic test system with accuracy compensation, a serial communication port, displacement sensor automatic test system with accuracy compensation includes: the test module comprises a mounting frame, a compression assembly, a compression driving device, a sliding test body, a test driving device and a measuring device, wherein the mounting frame comprises a bottom plate and a top plate arranged above the bottom plate in parallel, and the top surface of the top plate is provided with a sensor mounting position for placing a displacement sensor to be tested; the compressing assembly is arranged on the top surface of the top plate in a sliding manner and is positioned on one side of the sensor mounting position, the compressing driving device is connected with the compressing assembly and can drive the compressing assembly to move in a translation manner to be close to or far away from the sensor mounting position, and the compressing assembly can compress and fix the displacement sensor on the sensor mounting position or release the displacement sensor; the sliding testing body is arranged on the bottom plate in a sliding mode and located below the sensor installation position, the sliding testing body can be provided with a magnetic piece, and the testing driving device is in transmission connection with the sliding testing body and can drive the sliding testing body to horizontally move and slide parallel to the top plate so as to drive the magnetic piece to horizontally move relative to the sensor installation position; the measuring device is arranged on the bottom plate and is positioned on one side of the sliding test body in parallel to the sliding direction of the sliding test body, and the measuring device is used for measuring the moving distance of the sliding test body; and the measurement and control module is connected with the pressing driving device and the testing driving device and can be detachably connected with the displacement sensor.

In one example, the test module further comprises a linear transmission assembly, the linear transmission assembly comprises a slide rail, a ball screw and a slide block, the slide rail is fixedly arranged on the bottom plate and extends along the sliding direction of the sliding test body, the ball screw is arranged in parallel on the slide rail, and the slide block is sleeved on the ball screw and is connected with the slide rail in a sliding manner; the sliding test body is fixedly arranged at the top of the sliding block, the test driving device is connected with the ball screw and can drive the ball screw to rotate around the axis of the ball screw, and the ball screw rotates to drive the sliding block to slide along the sliding rail so as to drive the sliding test body to slide in a translation manner.

In one example, the measuring device is a vernier caliper, a main ruler of the vernier caliper is fixedly installed on the bottom plate, and a vernier of the vernier caliper is fixedly connected with the sliding test body; the vernier caliper is provided with a reading display screen.

In one example, the pressing assembly comprises a sliding seat, a connecting arm and a pressing wheel, the sliding seat is slidably arranged on the top surface of the top plate, one end of the connecting arm is connected to the sliding seat, the other end of the connecting arm extends out of the sliding seat towards one side of the sensor mounting position, the pressing wheel is rotatably arranged at the extending end of the connecting arm, and the pressing driving device is connected with one side of the sliding seat, which is far away from the sensor mounting position; the side face, facing the sensor mounting position, of the sliding seat can abut against one side face of the displacement sensor, and the pressing wheel can abut against the upper side face of the displacement sensor so as to tightly press and fix the displacement sensor on the sensor mounting position.

In one example, the connecting arm is rotatably connected to the sliding seat, the compressing assembly further comprises an elastic member support and an elastic member, the elastic member support is fixedly arranged on the top of the sliding seat and located above the connecting arm, the elastic member is arranged between the connecting arm and the elastic member support along a direction perpendicular to the top surface of the top plate, the contact position of the elastic member and the connecting arm is close to the extending end of the connecting arm, and the elastic member can generate a torque which is close to the top surface of the top plate in a rotating mode to the connecting arm.

In one example, the mounting bracket further comprises a limiting block, the limiting block is fixedly arranged on the top surface of the top plate and located on one side, away from the pressing assembly, of the sensor mounting position, and the limiting block can abut against the two opposite side surfaces of the displacement sensor respectively with the sliding seat so as to limit the mounting position of the displacement sensor.

In one example, the automatic test system for the displacement sensor with precision compensation further comprises a rack and a defective product recovery module, wherein the rack is provided with a test platform, and the test module is fixedly arranged on the top of the test platform through the mounting frame; the defective product recovery module is provided with a defective product recovery inlet and a defective product detection device, the defective product recovery inlet is fixedly arranged at the top of the test platform, and the defective product detection device is arranged at the defective product recovery inlet and is connected with the measurement and control module.

In one example, the automatic test system with precision compensation for the displacement sensor further comprises a laser marking device, the laser marking device is right opposite to the sensor installation position and is connected with the measurement and control module, and the laser marking device can mark the displacement sensor placed on the sensor installation position with laser.

In one example, the automatic test system for the displacement sensor with precision compensation further comprises a dust extraction device, wherein the dust extraction device is arranged adjacent to the sensor installation position and is connected with the measurement and control module, and the dust extraction device can extract smoke generated by laser marking.

In one example, the test module further comprises an in-place detection device, the in-place detection device is arranged on the top surface of the top plate and is opposite to the sensor installation position, and the in-place detection device is connected with the measurement and control module.

Through the utility model provides an automatic test system of displacement sensor with precision compensation can bring following beneficial effect:

1. the compression assembly is arranged to compress and fix the displacement sensor at the sensor mounting position, so that the displacement sensor is stably and reliably fixed, the test error caused by position movement in the test process is prevented, and the test is stable and reliable; the actual moving distance of the sliding test body can be accurately measured by arranging the measuring device, the corresponding relation between the displacement of the sliding test body and the output data of the test driving device can be accurately measured, the physical precision compensation is realized, the structure is simple, the test error is small, the test precision is high, the test result is accurate and reliable, and the product quality is ensured; through setting up the test signal of observing and controling the motion of the module control slip test body and gathering analysis displacement sensor, realize the automatic test to displacement sensor, operation simple to use is convenient, labour saving and time saving, degree of automation is high, and efficiency of software testing is high, can realize the continuous test to displacement sensor, satisfies big batch test user demand, and the practicality is strong, is fit for popularizing and applying.

2. Through setting up slide rail and ball screw, the precision of cooperation drive slip test body translation motion is higher, and the slip test body motion is steady difficult for rocking moreover, and the skew direction of motion is difficult for, and the test is reliable and stable, effectively improves the measuring accuracy, and the test result is accurate reliable, and the practicality is strong.

3. The sliding test body can drive the vernier to move by sliding, so that the displacement of the sliding test body is accurately measured; the vernier caliper has the advantages of simple integral structure, easiness in manufacturing, low cost, high measurement precision and accurate and reliable measurement result, and the measurement length can be accurate to 0.02 mm; the measuring result of the vernier caliper is displayed in real time through the reading display screen, so that the reading time of a user is saved, the reading error of the user is eliminated, the testing precision is effectively improved, the use is simple, convenient and fast, the testing efficiency is high, and the practicability is high.

4. Through setting up substandard product recovery module, the displacement sensor defective work that can properly handle the test and obtain effectively prevents that the displacement sensor defective work from putting out in disorder and flowing and sneaking into in the displacement sensor defective work, guarantees product quality, and the practicality is strong, is fit for popularizing and applying.

5. Through setting up the laser marking device, conveniently mark product information, be favorable to distinguishing displacement sensor's certified products and defective work, the reinforcing has precision compensation's displacement sensor automatic test system's service function, and degree of automation is high, and operation convenient to use, labour saving and time saving satisfies the test demand, and the practicality is strong.

6. Through setting up detection device on throne, can whether displacement sensor has been placed by automatic identification sensor installation position to the realization compresses tightly fixedly and automatic test to displacement sensor's automation, improves efficiency of software testing, can avoid the maloperation moreover, prevents to damage displacement sensor, increase of service life, and the practicality is strong.

Drawings

The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:

fig. 1 is a schematic structural diagram of a test module according to the present invention;

fig. 2 is a schematic structural view of another view angle of the testing module of the present invention;

fig. 3 is a schematic structural diagram of another view angle of the testing module according to the present invention;

fig. 4 is a schematic diagram of a partial enlarged structure of the test module of the present invention;

fig. 5 is a schematic diagram of the test module of the present invention with the hold-down assembly releasing the displacement sensor;

fig. 6 is the utility model discloses a test module's the subassembly that compresses tightly displacement sensor's schematic diagram.

Detailed Description

In order to more clearly explain the overall concept of the present invention, the following detailed description is given by way of example in conjunction with the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. In the description herein, references to the description of the terms "an aspect," "some aspects," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the aspect or example is included in at least one aspect or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same solution or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more aspects or examples.

As shown in fig. 1-6, the embodiment of the utility model provides an automatic test system of displacement sensor with accuracy compensation, it includes frame, test module 1 and observes and controls the module, and the frame is provided with test platform. The testing module 1 comprises a mounting frame 11, a pressing component 12, a pressing driving device 13, a sliding testing body 14, a testing driving device 15 and a measuring device 16, wherein the mounting frame 11 is fixedly arranged at the top of the testing platform, the mounting frame 11 comprises a bottom plate 111 and a top plate 112 arranged above the bottom plate 111 in parallel, and the top surface of the top plate 112 is provided with a sensor mounting position for placing the displacement sensor 200 to be tested; the pressing component 12 is arranged on the top surface of the top plate 112 in a sliding manner and located on one side of the sensor installation position, the pressing driving device 13 is connected with the pressing component 12 and can drive the pressing component 12 to move in a translation mode to be close to or far away from the sensor installation position, and the pressing component 12 can press and fix the displacement sensor 200 on the sensor installation position or release the displacement sensor 200; the sliding testing body 14 is arranged on the bottom plate 111 in a sliding mode and located below the sensor installation position, the sliding testing body 14 can be provided with a magnetic piece, the testing driving device 15 is in transmission connection with the sliding testing body 14 and can drive the sliding testing body 14 to horizontally move and slide parallel to the top plate 112 so as to drive the magnetic piece to horizontally move relative to the sensor installation position; the measuring device 16 is disposed on the bottom plate 111 and is located on the side of the sliding test body 14 parallel to the sliding direction of the sliding test body 14, and the measuring device 16 is used for measuring the moving distance of the sliding test body 14. The measurement and control module is connected with the pressing driving device 13 and the testing driving device 15 and can be detachably connected with the displacement sensor 200.

The magnetic part is fixedly arranged on the sliding test body 14, the displacement sensor 200 is fixedly arranged on the sensor mounting position, the sliding test body 14 slides to drive the magnetic part to move in a translation mode relative to the displacement sensor 200, the magnetic part triggers the displacement sensor 200, and the displacement sensor 200 detects the magnetic part to detect the moving distance of the sliding test body 14; meanwhile, the output data of the test driving device 15 has a certain corresponding relationship with the actual moving distance of the sliding test body 14; the performance test of the displacement sensor 200 is performed by comparing the result of the movement distance detected by the displacement sensor 200 with the output data of the test driving device 15.

The compression assembly 12 is arranged to compress and fix the displacement sensor 200 at the sensor mounting position, so that the displacement sensor 200 is stably and reliably fixed, test errors caused by position movement in the test process are prevented, and the test is stable and reliable; the actual moving distance of the sliding test body 14 can be accurately measured by arranging the measuring device 16, so that the corresponding relation between the displacement of the sliding test body 14 and the output data of the test driving device 15 can be accurately measured, the physical precision compensation is realized, the structure is simple, the test error is small, the test precision is high, the test result is accurate and reliable, and the product quality is ensured; through setting up the test signal that the motion of observing and controling module control slip test body 14 and gather analysis displacement sensor 200, realize the automatic test to displacement sensor 200, operation simple to use is convenient, labour saving and time saving, degree of automation is high, and efficiency of software testing is high, can realize satisfying big batch test user demand to displacement sensor 200's continuous test, and the practicality is strong, is fit for popularizing and applying.

In one embodiment, the test module 1 is detachably mounted on the top of the test platform through a mounting frame 11, so that the test module 1 is convenient to maintain and replace.

Specifically, the testing module 1 further includes a linear transmission assembly 17, the linear transmission assembly 17 includes a slide rail 171, a ball screw 172 and a slider 173, the slide rail 171 is fixedly disposed on the bottom plate 111 and extends along the sliding direction of the sliding testing body 14, the ball screw 172 is disposed in parallel on the slide rail 171, and the slider 173 is sleeved on the ball screw 172 and slidably connected to the slide rail 171; the sliding testing body 14 is fixedly arranged at the top of the sliding block 173, the testing driving device 15 is connected with the ball screw 172 and can drive the ball screw 172 to rotate around the axis of the testing driving device, and the ball screw 172 rotates to drive the sliding block 173 to slide along the sliding rail 171 so as to drive the sliding testing body 14 to slide in a translation manner. Through setting up slide rail 171 and ball screw 172, the precision of the translation motion of the cooperation drive slip test body 14 is higher, and the slip test body 14 motion is steady difficult for rocking moreover, and the skew direction of motion is difficult for, and the test is reliable and stable, effectively improves the measuring accuracy, and the test result is accurate reliable, and the practicality is strong.

In one embodiment, the test driving device 15 is a servo motor, and the angle and the number of turns of the servo motor correspond to the moving distance of the sliding test body 14.

Specifically, the measuring device 16 is a vernier caliper, a main scale 161 of the vernier caliper is fixedly installed on the bottom plate 111, and a vernier 162 of the vernier caliper is fixedly connected with the sliding testing body 14; the vernier caliper has a reading display screen 163. The sliding test body 14 can slide to drive the cursor 162 to move, so that the displacement of the sliding test body 14 is accurately measured; the vernier caliper has the advantages of simple integral structure, easiness in manufacturing, low cost, high measurement precision and accurate and reliable measurement result, and the measurement length can be accurate to 0.02 mm; the measuring result of the vernier caliper is displayed in real time through the reading display screen 163, the reading time of a user is saved, the reading error of the user is eliminated, the testing precision is effectively improved, the use is simple, convenient and fast, the testing efficiency is high, and the practicability is high.

Specifically, the pressing assembly 12 includes a sliding seat 121, a connecting arm 122 and a pressing wheel 123, the sliding seat 121 is slidably disposed on the top surface of the top plate 112, one end of the connecting arm 122 is connected to the sliding seat 121, the other end of the connecting arm extends from one side of the sliding seat 121 toward the sensor mounting location, the pressing wheel 123 is rotatably disposed at the extending end of the connecting arm 122, and the pressing driving device 13 is connected to one side of the sliding seat 121 away from the sensor mounting location; the side of sliding seat 121 towards the sensor installation position can support against a side of displacement sensor 200, and pinch roller 123 can support against the upper side of displacement sensor 200 to compress and fix displacement sensor 200 in the sensor installation position. The sliding seat 121 and the pressing wheel 123 simultaneously abut against and press the circumferential side face and the upper side face of the displacement sensor 200, the pressing component 12 can effectively press and fix the displacement sensor 200, the position stability of the displacement sensor 200 is ensured, and the test is stable and reliable; the pinch roller 123 can stably roll to the upper side face of the displacement sensor 200, so that the situation that the pinch roller 123 interferes with the vertical side face of the displacement sensor 200 when moving and cannot move in place is effectively prevented, the work is stable and reliable, the rolling motion friction force is small, the outer surface of the displacement sensor 200 is prevented from being abraded, and the attractive appearance of a product is ensured; and simple structure, the low cost is hanged down to the easy manufacturing, convenient to use, the reliability is high, long service life, the practicality is strong.

In one embodiment, the distance between the bottom of the protruding end of the connecting arm 122 and the top surface of the top plate 112 is greater than or equal to the thickness of the displacement sensor 200; the distance between the bottom of the pressing wheel 123 and the top surface of the top plate 112 is smaller than the thickness of the displacement sensor 200, so that the displacement sensor 200 is pressed and fixed more firmly and stably, and the stability and reliability of the test are ensured; and pinch roller 123 adopts elastic material to make, can warp in order to increase the area of contact with displacement sensor 200, prevents that the extrusion from damaging displacement sensor 200, guarantees product quality. For example, the pinch roller 123 may be made of silicone or rubber.

Specifically, the pressing drive device 13 is an air cylinder. The piston rod 131 of the cylinder is fixedly connected with the side face, deviating from the sensor mounting position, of the sliding seat 121, and the piston rod 131 of the cylinder moves in a telescopic mode and pushes and pulls the sliding seat 121 to move in a translational sliding mode. The air cylinder is simple in structure, stable and reliable in working, low in cost, stable in sliding and not prone to shaking of the driving sliding seat 121, stable and reliable in testing, high in testing precision, accurate and reliable in testing structure and strong in practicability, and the aerodynamic force avoids interference of an electromagnetic field of the motor when the displacement sensor 200 is tested.

Specifically, the connecting arm 122 is rotatably connected to the sliding seat 121, and the connecting arm 122 can rotate relative to the sliding seat 121 around a rotating shaft parallel to the top surface of the top plate 112; the pressing assembly 12 further includes an elastic member support 124 and an elastic member 125, the elastic member support 124 is fixedly disposed on the top of the sliding seat 121 and located above the connecting arm 122, the elastic member 125 is disposed between the connecting arm 122 and the elastic member support 124 along a direction perpendicular to the top surface of the top plate 112, a contact position of the elastic member 125 and the connecting arm 122 is close to the extending end of the connecting arm 122, and the elastic member 125 can generate a moment to the connecting arm 122 to rotate close to the top surface of the top plate 112. The connecting arm 122 can rotate relative to the sliding seat 121, so that the connecting arm 122 is prevented from interfering with the displacement sensor 200, and the pinch roller 123 can conveniently move to the upper side of the displacement sensor 200; through setting up elastic component 125, can give pinch roller 123 towards roof 112 top surface extrusion displacement sensor 200's power, guarantee that pinch roller 123 stably compresses tightly fixed displacement sensor 200, fixed firm reliable, difficult not hard up, the practicality is strong.

In one embodiment, the resilient member 125 is a spring.

Specifically, the mounting frame 11 further includes a guide rail 113, and the guide rail 113 is fixedly disposed on the top surface of the top plate 112 and extends along the sliding direction of the sliding seat 121; the sliding seat 121 is provided with a guide portion 2211, and the guide portion 2211 is slidably connected with the guide rail 113 to guide and limit the sliding movement of the sliding seat 121. Guide spacing is carried out to the sliding motion of sliding seat 121 through setting up guide rail 113, and sliding seat 121 sliding motion is stable, and the skew slip direction of difficult, compress tightly subassembly 12 job stabilization reliable, guarantee that pinch roller 123 is accurate stable to be pressed and fix displacement sensor 200, guarantee that the test is reliable and stable going on, the practicality is strong.

Specifically, the mounting bracket 11 further includes a limiting block 114, the limiting block 114 is fixedly disposed on the top surface of the top plate 112 and located on one side of the sensor mounting position away from the pressing assembly 12, and the limiting block 114 and the sliding seat 121 can respectively abut against two opposite side surfaces of the displacement sensor 200 to limit the mounting position of the displacement sensor 200. Through the mounted position of the spacing displacement sensor 200 of stopper 114, the position that displacement sensor 200 repeatedly placed is unanimous, guarantees repeated test accuracy, and the test result is accurate reliable, makes things convenient for displacement sensor 200's big batch test, operates simple to use convenience moreover, labour saving and time saving, and the practicality is strong.

Specifically, the top plate 112 is provided with a through hole 115 at the sensor mounting position, the mounting frame 11 further includes a positioning column 116, the positioning column 116 is vertically and fixedly disposed on the top surface of the top plate 112 and is close to the through hole 115, and the positioning column 116 is matched with the mounting hole 201 of the displacement sensor 200 to position the relative position of the displacement sensor 200 and the through hole 115. The mounting position of the displacement sensor 200 is positioned through the positioning column 116, so that the displacement sensor 200 is ensured to be over against the through hole 115, the displacement sensor 200 is convenient and quick to mount and dismount, and the testing efficiency is high; through setting up through-hole 115, displacement sensor 200 can be through the magnetic part on the slip test body 14 of through-hole 115 response roof 112 below, improves measuring accuracy and sensitivity, and the test result is accurate reliable.

Specifically, one side of the limiting block 114 away from the sensor mounting position is provided with a positioning inclined plane; the mounting bracket 11 further includes a stopper 117 and a positioning block 118, the stopper 117 is fixedly disposed on the top surface of the top plate 112 and is located on one side of the limiting block 114 departing from the sensor mounting position, the positioning block 118 has a matching inclined surface adapted to the positioning inclined surface, the positioning block 118 can be inserted between the limiting block 114 and the stopper 117, and the mounting position of the limiting block 114 on the top surface of the top plate 112 can be adjusted by adjusting the position of the positioning block 118 inserted between the limiting block 114 and the stopper 117. Through adjusting the mounted position of stopper 114, sensor mounting position can hold the displacement sensor 200 of placing unidimensional, and the displacement sensor automatic test system that has the precision compensation can test the displacement sensor 200 of unidimensional not, improves commonality and flexibility, and application scope is wider, reduces test equipment cost moreover, and the practicality is strong.

In one embodiment, the stopper 114 is provided with a waist-shaped hole, and a fastener passes through the waist-shaped hole to be fastened with the top plate 112, so as to fixedly mount the stopper 114 on the top surface of the top plate 112; the fastener is unscrewed, and the mounting position of the limiting block 114 on the top surface of the top plate 112 can be adjusted through the waist-shaped hole.

Specifically, a wedge-shaped gap is formed between the positioning inclined plane of the limiting block 114 and the stop 117; the mounting rack 11 further comprises a locking member 119, the locking member 119 is disposed on the top surface of the top plate 112 and faces an expansion opening of the gap between the limiting block 114 and the stopper 117, and the expansion opening is an opening on the larger side of the wedge-shaped gap; the locking member 119 can abut against the side of the positioning block 118 perpendicular to the stopper 117 to lock the positioning block 118 between the stopper 114 and the stopper 117. The position of the position adjusting block 118 is locked through the locking piece 119, and then the position of the limiting block 114 is locked, so that the position of the limiting block 114 is prevented from being changed due to the fact that the position of the displacement sensor 200 is placed in a moving mode, the accuracy and the consistency of the repeatedly placed position are guaranteed, the testing precision is guaranteed, the testing result is accurate and reliable, and the practicability is high.

In one embodiment, the locking member 119 is a locking screw or bolt.

Specifically, the automatic displacement sensor testing system with precision compensation further comprises a defective product recovery module, the defective product recovery module is provided with a defective product recovery inlet and a defective product detection device, the defective product recovery inlet is fixedly arranged at the top of the testing platform, and the defective product detection device is arranged at the defective product recovery inlet and is connected with the measurement and control module. Through setting up substandard product recovery module, the displacement sensor defective work that can properly handle the test and obtain effectively prevents that the displacement sensor defective work from putting out in disorder and flowing and sneaking into in the displacement sensor defective work, guarantees product quality, and the practicality is strong, is fit for popularizing and applying.

Specifically, the automatic displacement sensor testing system with precision compensation further comprises a laser marking device, the laser marking device is arranged right opposite to the sensor installation position and connected with the measurement and control module, and the laser marking device can perform laser marking on the displacement sensor 200 placed on the sensor installation position. Through setting up the laser marking device, conveniently mark product information, be favorable to distinguishing displacement sensor 200's certified products and defective work, the reinforcing has precision compensation's displacement sensor automatic test system's service function, and degree of automation is high, and operation simple to use is convenient, and labour saving and time saving satisfies the test demand, and the practicality is strong.

Specifically, the automatic displacement sensor testing system with precision compensation further comprises a dust pumping device, the dust pumping device is arranged close to the sensor installation position and connected with the measurement and control module, and the dust pumping device can pump smoke generated by laser marking. Through setting up the dust extraction device, be favorable to keeping test platform clean and guarantee test environment air quality, the protection operating personnel is healthy, and the practicality is strong.

Specifically, the test module 1 further includes an in-place detection device, the in-place detection device is disposed on the top surface of the top plate 112 and faces the sensor installation position, and the in-place detection device is connected to the measurement and control module. Through setting up detection device on throne, can whether displacement sensor 200 has been placed to automatic identification sensor installation position to the realization compresses tightly fixedly and automatic test to displacement sensor 200's automation, improves efficiency of software testing, can avoid the maloperation moreover, prevents to damage displacement sensor 200, increase of service life, the practicality is strong.

In a particular embodiment, the defect detection device and/or the in-place detection device comprises a grating sensor. The grating sensor is a photoelectric sensor which adopts the principle of grating overlapping stripes for measurement. The grating measurement has simple structure, measurement accuracy is high, easily realize automatic and digital, can realize advantages such as the quick real-time detection of developments, effectively detects displacement sensor defective work and drops into the substandard product and retrieve the entry, whether has placed displacement sensor 200 on the effective recognition sensor installation position, detects the accuracy height, avoids the erroneous judgement, and the practicality is strong.

The automatic test system with the precision compensation for the displacement sensor further comprises an alarm device, and the alarm device is connected with the measurement and control module. By arranging the alarm device, alarm prompt information can be sent out in time when the displacement sensor 200 is unqualified in test, so that an operator is reminded of processing in time, misoperation of the operator is prevented, the product quality is guaranteed, and the test efficiency is improved; the alarm device can comprise an alarm lamp and/or a loudspeaker, the alarm lamp is arranged at the top of the rack, and the loudspeaker is arranged in the rack.

The automatic test system with the precision compensation for the displacement sensor further comprises a display device, wherein the display device is connected with the measurement and control module and is used for displaying the test result and the performance parameters of the displacement sensor 200; the display device may be a touch display screen.

The utility model discloses an automatic test system of displacement sensor with accuracy compensation when using, including following step:

firstly, placing a displacement sensor 200 at a sensor installation position and connecting the displacement sensor with a measurement and control module, and starting an automatic displacement sensor testing system with precision compensation; the on-site detection device detects the displacement sensor 200 on the sensor installation position and outputs an on-site signal of the displacement sensor to the measurement and control module; the measurement and control module controls the pressing driving device 13 to drive the pressing component 12 to move close to the sensor installation position, and the pressing component 12 presses and fixes the displacement sensor 200 to the sensor installation position.

Secondly, the measurement and control module controls the test driving device 15 to drive the ball screw 172 to rotate, the ball screw 172 drives the sliding block 173 to slide along the sliding rail 171, the sliding block 173 drives the sliding test body 14 to move in a translation mode, the sliding test body 14 drives the magnetic piece to move in a translation mode relative to the displacement sensor 200, the displacement sensor 200 senses the movement of the magnetic piece, and the measurement and control module collects a test signal output by the displacement sensor 200 and output data of the test driving device 15.

Then, the measurement and control module analyzes the test signal and the output data and judges whether the displacement sensor 200 is qualified or not; the measurement and control module controls the test driving device 15 to stop working and controls the compression driving device 13 to drive the compression assembly 12 to move away from the sensor mounting position so as to release the displacement sensor 200, and then the measurement and control module is separated from the displacement sensor 200.

If the displacement sensor 200 is qualified, the measurement and control module controls the laser marking device to mark on the displacement sensor 200, and then the qualified product of the displacement sensor is taken down by the sensor mounting position, so that the next displacement sensor 200 can be tested continuously.

If the displacement sensor 200 is unqualified, the measurement and control module locks the test driving device 15 and controls the alarm device to send out product unqualified prompt information, unqualified products of the displacement sensor are taken down from the sensor mounting position and put into a defective product recycling inlet, when the defective product detection device detects the unqualified products of the displacement sensor, a defective product input signal is output to the measurement and control module, the measurement and control module unlocks the test driving device 15, and then the next displacement sensor 200 can be tested continuously.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.

The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims (10)

1. An automatic test system for a displacement sensor with precision compensation, comprising:

the test module comprises a mounting frame, a compression assembly, a compression driving device, a sliding test body, a test driving device and a measuring device, wherein the mounting frame comprises a bottom plate and a top plate arranged above the bottom plate in parallel, and the top surface of the top plate is provided with a sensor mounting position for placing a displacement sensor to be tested; the compressing assembly is arranged on the top surface of the top plate in a sliding manner and is positioned on one side of the sensor mounting position, the compressing driving device is connected with the compressing assembly and can drive the compressing assembly to move in a translation manner to be close to or far away from the sensor mounting position, and the compressing assembly can compress and fix the displacement sensor on the sensor mounting position or release the displacement sensor; the sliding testing body is arranged on the bottom plate in a sliding mode and located below the sensor installation position, the sliding testing body can be provided with a magnetic piece, and the testing driving device is in transmission connection with the sliding testing body and can drive the sliding testing body to horizontally move and slide parallel to the top plate so as to drive the magnetic piece to horizontally move relative to the sensor installation position; the measuring device is arranged on the bottom plate and is positioned on one side of the sliding test body in parallel to the sliding direction of the sliding test body, and the measuring device is used for measuring the moving distance of the sliding test body; and

and the measurement and control module is connected with the pressing driving device and the testing driving device and can be detachably connected with the displacement sensor.

2. The automatic test system for the displacement sensor with precision compensation, according to claim 1, is characterized in that the test module further comprises a linear transmission assembly, the linear transmission assembly comprises a slide rail, a ball screw and a slide block, the slide rail is fixedly arranged on the bottom plate and extends along the sliding direction of the sliding test body, the ball screw is arranged in parallel on the slide rail, and the slide block is sleeved on the ball screw and is connected with the slide rail in a sliding manner; the sliding test body is fixedly arranged at the top of the sliding block, the test driving device is connected with the ball screw and can drive the ball screw to rotate around the axis of the ball screw, and the ball screw rotates to drive the sliding block to slide along the sliding rail so as to drive the sliding test body to slide in a translation manner.

3. The automatic testing system for the displacement sensor with precision compensation, as claimed in claim 1, wherein the measuring device is a vernier caliper, a main scale of the vernier caliper is fixedly installed on the base plate, and a vernier of the vernier caliper is fixedly connected with the sliding testing body; the vernier caliper is provided with a reading display screen.

4. The automatic test system for the displacement sensor with precision compensation, according to claim 1, is characterized in that the compressing assembly comprises a sliding seat, a connecting arm and a compressing wheel, the sliding seat is slidably disposed on the top surface of the top plate, one end of the connecting arm is connected to the sliding seat, the other end of the connecting arm extends from the sliding seat towards one side of the sensor mounting position, the compressing wheel is rotatably disposed at the extending end of the connecting arm, and the compressing driving device is connected with one side of the sliding seat away from the sensor mounting position; the side face, facing the sensor mounting position, of the sliding seat can abut against one side face of the displacement sensor, and the pressing wheel can abut against the upper side face of the displacement sensor so as to tightly press and fix the displacement sensor on the sensor mounting position.

5. The automatic testing system for the displacement sensor with accuracy compensation, as recited in claim 4, wherein the connecting arm is rotatably connected to the sliding seat, the pressing assembly further comprises an elastic member support and an elastic member, the elastic member support is fixedly disposed on the top of the sliding seat and located above the connecting arm, the elastic member is disposed between the connecting arm and the elastic member support along a direction perpendicular to the top surface of the top plate, and the contact position of the elastic member and the connecting arm is close to the protruding end of the connecting arm, and the elastic member is capable of generating a moment to the connecting arm to rotate close to the top surface of the top plate.

6. The automatic testing system for the displacement sensor with accuracy compensation, according to claim 4, characterized in that the mounting frame further comprises a limiting block, the limiting block is fixedly arranged on the top surface of the top plate and located on one side of the sensor mounting position far away from the pressing assembly, and the limiting block and the sliding seat can respectively abut against two opposite side surfaces of the displacement sensor to limit the mounting position of the displacement sensor.

7. The automatic test system for the displacement sensor with the precision compensation, as claimed in any one of claims 1 to 6, is characterized in that the automatic test system for the displacement sensor with the precision compensation further comprises a rack and a defective product recovery module, wherein the rack is provided with a test platform, and the test module is fixedly arranged on the top of the test platform through the mounting rack; the defective product recovery module is provided with a defective product recovery inlet and a defective product detection device, the defective product recovery inlet is fixedly arranged at the top of the test platform, and the defective product detection device is arranged at the defective product recovery inlet and is connected with the measurement and control module.

8. The automatic testing system of displacement sensor with accuracy compensation of claim 7, characterized in that, the automatic testing system of displacement sensor with accuracy compensation further comprises a laser marking device, the laser marking device is just right to the sensor installation position and is connected with the measurement and control module, the laser marking device can mark the displacement sensor placed in the sensor installation position with laser.

9. The automatic test system for a displacement sensor with accuracy compensation as claimed in claim 8, further comprising a dust extraction device, wherein the dust extraction device is disposed adjacent to the sensor mounting position and connected to the measurement and control module, and the dust extraction device can extract smoke generated by laser marking.

10. The automatic test system for the displacement sensor with precision compensation of claim 8, wherein the test module further comprises an in-place detection device, the in-place detection device is arranged on the top surface of the top plate and faces the sensor installation position, and the in-place detection device is connected with the measurement and control module.

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